Spontaneous shutdowns of macbook pro charging, what could be the problem?

Question

macOS

good afternoon, I have been living with a problem in a macbook for a long time, but recently the problem has become more frequent, and
the essence of the issue is very unnerving is that
you connect the macbook to charging, after some time (a second, a minute, an hour, each time in a different way) it turns off by itself (the charging diode slowly goes out, and the charge disappears accordingly) if you disconnect the plug from the macbook and put it back in, nothing happens, only turning off the charging from the outlet helps, such dances with a tambourine can continue for several hours (turned on the charge, it turned off, turned it on again)
tell me please, what could be the problem, in charging, in the battery, or in the electric circuit of the macbook itself, maybe someone has encountered similar problems.
thanks in advance

Answer 1

Most likely, the contact in the charger cable disappears, and if not, then the reason is more likely in the charger, the only thing that can be in the computer itself is an excess of power consumption and hence the activation of protection on charging, which is then "reset" when the voltage is removed (reboot) charging - you need to study the protection action and measure the current strength, well, or the contact disappears in the power circuit of the macbook itself, which is very unlikely, judging by your description. In any case, diagnostics is required with a minimum set of tools, experience and knowledge.

Answer 2

From the banal and the simplest - there are 5 contacts on the plug. Check if they spring well, if they are clean. Also take a look at the connector itself on the poppy, often it just clogs up - again, crumbs, dust, because of this there is insufficient contact and paranormal phenomena when charging.

Answer 3

Take a clean toothbrush and gently, but firmly, clean the contacts with it - on the Mac and on the charger.

Answer 4

You may need to reboot the computer's management controller. Recently, the mini stopped entering the "sleep mode" - it helped me.
Read https://support.apple.com/en-us/HT201295 and https://support.apple.com/en-us/HT204063